Publications by authors named "Jichang Zheng"
Article Synopsis
- Insulin-like growth factor-binding proteins (IGFBPs) are essential for growth and development, with IGFBP-3 and IGFBP-5 being primary carriers of IGF in circulation.
- A study cloned the gene sequences of igfbp-3, igfbp-5a, and igfbp-5b from yellowtail kingfish, revealing their expression across various tissues, notably in the heart, brain, and liver.
- The expression of these genes correlates with early developmental stages and changes under stress conditions like food deprivation and overcrowding, suggesting they may act as biomarkers for growth regulation and adverse rearing conditions.
An 8-week growth trial was performed to investigate the protective effects of methanotroph bacteria meal (MBM) produced from methane against soybean meal-induced enteritis (SBMIE) in juvenile turbot (Scophthalmus maximus L.). Five isonitrogenous and isolipidic diets were formulated: fishmeal-based diet (FM, the control group); FM with approximate 50% of fishmeal substituted by 399.
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- Fish health suffers in high temperatures, and this study explores how dietary lipids influence juvenile turbot's growth and physiology under heat stress.
- Five lipid concentrations (6.81% to 17.08%) were tested, with 12.03% deemed optimal, leading to better growth and lipid balance in fish at high temperatures.
- Results indicated that the optimal lipid diet improved antioxidant activity, reduced oxidative damage, and enhanced immunity by regulating various genes and pathways.
Article Synopsis
- * Fish fed a high protein diet with TB supplementation showed improved intestinal enzyme activity and antioxidant capacity compared to those fed a standard fish meal diet, particularly at 0.1% TB.
- * Additionally, inflammation-related gene expressions were altered with TB supplementation, showing reduced levels of pro-inflammatory markers and varied responses in antioxidant gene expression, indicating potential health benefits from the right TB dosage.
Article Synopsis
- A 70-day feeding experiment tested how replacing fishmeal with degossypolized cottonseed protein (DCP) affects the growth of large yellow croaker fish, with five different dietary formulations ranging from 0% to 80% DCP.
- The group that replaced 20% of fishmeal with DCP showed significantly higher weight gain rates and specific growth rates compared to the control group, along with improved antioxidant activity and lower levels of malondialdehyde, indicating less oxidative stress.
- The study suggested that the optimal replacement level for DCP in the diet of large yellow croaker is around 8.12% to 9.37%, as higher amounts still increased growth but with varying impacts on digestive
Long noncoding RNA lincsc5d regulates hepatic cholesterol synthesis by modulating sterol C5 desaturase in large yellow croaker.
Comp Biochem Physiol B Biochem Mol Biol
January 2023
Article Synopsis
- A study was conducted to see how long noncoding RNA (lncRNA) affects cholesterol metabolism in large yellow croaker fish when fed different types of oils (fish oil, soybean oil, olive oil, and palm oil).
- Results indicated that olive oil and palm oil diets led to higher cholesterol levels in the fish's liver compared to fish oil diets, with specific pathways like steroid biosynthesis showing significant changes.
- A novel lncRNA named lincsc5d, associated with the cholesterol synthase gene sc5d, was discovered and found to be more prevalent in the tissues of fish fed with soybean, olive, and palm oils, suggesting their role in increasing cholesterol synthesis.
Article Synopsis
- CAM is a new single-cell protein sourced from bacteria that use carbon monoxide as their sole carbon source, being studied as a substitute for fish meal in juvenile turbot diets.
- A 56-day experiment tested six diets with varying levels of CAM replacing fish meal, revealing no significant impact on survival rates or growth rates when fish meal replacement was under 45%.
- Increasing CAM levels led to higher fat retention and improved digestibility of certain amino acids, while the expression of genes related to amino acid transport and protein metabolism showed significant changes, peaking at specific CAM replacement levels.
Article Synopsis
- A 70-day feeding trial tested dietary lysolecithin's effects on juvenile large yellow croaker, measuring growth, serum health markers, and inflammation.
- Fish fed with 0.2%, 0.4%, and 0.6% lysolecithin showed increased weight gain and better lipid profiles compared to the control group, with 0.4% and 0.6% significantly enhancing muscle lipid content.
- Results indicated improved HDL cholesterol and reduced LDL cholesterol and liver enzyme activity in fish consuming lysolecithin, along with varying impacts on specific gene expressions related to fat metabolism and inflammation.